Hello, I wanted to convert the retrieved XY coordinates to Latitude and Longitude. I saw the command to do so is 0x82 and 0x58 in documentation [http://www.sumo.dlr.de/wiki/TraCI/Simulation_Value_Retrieval#Command_0x82:_Position_Conversion]. I have valid XY Coordinates in pos.x and pos.y. So in order to convert my XY Coordinates to Lat/Long . I am using following command. Don’t know what’s wrong with it: tcpip::Storage*tmp = new tcpip::Storage; tmp->writeByte(TYPE_COMPOUND); tmp->writeInt(2); tmp->writeDouble(pos.x); tmp->writeDouble(pos.y); tmp->writeByte(TYPE_UBYTE); tmp->writeUnsignedByte(POSITION_LON_LAT); send_commandGetVariable(0x82,0x58,“veh1”,tmp); I debugged the code and error is coming in “send_commandGetVariable(0x82,0x58,“veh1”,tmp);” function. Getting following error on SUMO-GUI Server: Error: tcpip::Storage::readIsSafe: want to read 823066624 bytes from Storage, but only 20 remaining Quitting (on error). Any Help!! ThanksJ ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today.http://sdm.link/xeonphi _______________________________________________ sumo-user mailing list sumo-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sumo-user